List of original highways in Louisiana (1–50)

The following is a list of state highways in the U.S. state of Louisiana designated in the 1-50 range prior to the 1955 Louisiana Highway renumbering. All were part of the original 98 state highways authorized by the state legislature in 1921.[1]

Louisiana State Route 1
Further information: Louisiana State Route 1

State Route 1
LocationPointe à la Hache–Caddo Parish
Length452.7 mi (728.6 km)
Existed1924–1955

Louisiana State Route 1 ran 452.7 miles (728.6 km) in a north-south direction from Pointe à la Hache to the Texas state line near Greenwood. The route was designated along the Jefferson Highway, an auto trail that ran from New Orleans to Winnipeg.

In 1926, US 71, US 171, and US 80 were overlaid on SR 1 from Baton Rouge to Clarence, Belmont to Shreveport, and Shreveport to the Texas state line, respectively. While the routes were signed concurrently, the state route designations were removed in the 1955 Louisiana Highway renumbering.

Louisiana State Route 2
Further information: U.S. Route 90 in Louisiana

State Route 2
LocationCalcasieu Parish–St. Tammany Parish
Length319.6 mi (514.3 km)
Existed1921–1955

Louisiana State Route 2 ran 319.6 miles (514.3 km) in a east-west direction from the Texas state line via Lake Charles, Lafayette, Morgan City, and New Orleans to the Mississippi state line. The route was designated along the Old Spanish Trail.

In 1926, US 90 was overlaid on most of SR 2. While the route was signed concurrently, the SR 2 designation was removed in the 1955 Louisiana Highway renumbering.

Louisiana State Route 3
Further information: U.S. Route 65 in Louisiana

State Route 3
LocationBaton Rouge–East Carroll Parish
Length153.4 mi (246.9 km)
Existed1921–1955

Louisiana State Route 3 ran 153.4 miles (246.9 km) in a north–south direction from Baton Rouge to the Arkansas state line north of Lake Providence. The designation existed in two segments as the roadway passed through the state of Mississippi between a point north of St. Francisville and Vidalia (opposite the Mississippi River from Natchez, Mississippi). North of Vidalia, the route also passed through St. Joseph, Newellton, and Tallulah.[2]

In 1926, the southern segment became part of US 61, and the northern segment became part of US 65 when the numbered U.S. Highway system was created.[3][4] Route 3 remained co-signed with its U.S. counterparts until the 1955 Louisiana Highway renumbering, which eliminated such overlaps.[2] A portion of the route north of Lake Providence bypassed in the 1930s was designated as Route 3-D while it remained in the state highway system.[5]

Louisiana State Route 3-D

State Route 3-D
Location
Existed1931–1955

Louisiana State Route 3-D ran 8.72 miles (14.03 km) in a north-south direction from US 65/SR 3 north of Lake Providence to US 65/SR 3 at Millikin. It was a potion of SR 3 bypassed in 1931.

Louisiana State Route 4
Further information: U.S. Route 80

State Route 4
LocationRichland Parish–Shreveport
Length182.1 mi (293.1 km)
Existed1924–1955

Louisiana State Route 4 ran 182.1 miles (293.1 km) in a north-south direction from the Mississippi state line to LA 1 in Shreveport. The route was designated along the Dixie Overland Highway.

In 1926, US 80 was overlaid on the entirety of SR 4. While the route was signed concurrently, the SR 4 designation was removed in the 1955 Louisiana Highway renumbering.

Louisiana State Route 5

State Route 5
Location
Existed1921–1955

Louisiana State Route 5-D

State Route 5-D
Location
Existed1921–1955

Louisiana State Route 6
Further information: Louisiana Highway 6

State Route 6
LocationConcordia Parish–Sabine Parish
Length163.4 mi (263.0 km)
Existed1924–1955

Louisiana State Route 6 ran 163.4 miles (263.0 km) in a east-west direction from the Texas state line at the Sabine River to the Mississippi state line at Vidalia.

In 1934, US 84 was extended on top of the eastern half of SR 6 from the Mississippi state line to Clarence. While the route was signed concurrently, the state route designation was removed in the 1955 renumbering; the western half became the modern LA 6.

Louisiana State Route 7

State Route 7
LocationCalcasieu Parish–Washington Parish
Existed1921–1955

Louisiana State Route 7 ran in a west-east direction from the Texas state line at the Sabine River to the Mississippi state line at Bogalusa.

In 1926, US 190 was overlaid on SR 7 from Ripley to the Mississippi state line. While the route was marked concurrently, the SR 7 designation was cancelled in favor of US 190 in the 1955 renumbering. The remainder of SR 7 became LA 12.

Louisiana State Route 8
Further information: Louisiana Highway 1

State Route 8
LocationCaddo Parish
Length36.2 mi (58.3 km)
Existed1921–1955

Louisiana State Route 8 ran 36.2 miles (58.3 km) in a north–south direction from US 71/SR 55 north of Shreveport to the Texas state line northwest of Rodessa.

The route became the northernmost of LA 1 in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 9

State Route 9
Location
Existed1921–1955

Louisiana State Route 10

State Route 10
Location
Existed1921–1955

Louisiana State Route 10-D

State Route 10-D
Location
Existed1921–1955

Louisiana State Route 11

State Route 11
Location
Existed1921–1955

Louisiana State Route 12

State Route 12
LocationCreston–Homer
Length84.3 mi (135.7 km)
Existed1921–1955

Louisiana State Route 12 ran 84.3 miles (135.7 km) in a general north-south direction from Creston to Homer.

The route became the central portion of LA 9 in the 1955 renumbering.

Louisiana State Route 13

State Route 13
LocationLoggy Bayou–West Monroe
Length93.2 mi (150.0 km)
Existed1921–1955

Louisiana State Route 13 ran 93.2 miles (150.0 km) in an east–west direction from US 71/SR 10 at Loggy Bayou to US 80/SR 4 west of West Monroe.

The route was split among seven different routes in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 14
Further information: U.S. Route 165

State Route 14
LocationRapides Parish–Morehouse Parish
Length150.3 mi (241.9 km)
Existed1921–1955

Louisiana State Route 14 ran 150.3 miles (241.9 km) in a north-south direction from US 71/US 167/SR 1 in Alexandria to the Arkansas state line near Mer Rouge.

In 1926, US 165 was overlaid on the entirety of SR 14. While the route was signed concurrently, the state route designation was removed in the 1955 renumbering.

Louisiana State Route 14-D

State Route 14-D
Location
Existed1921–1955

Louisiana State Route 15

State Route 15
Location
Length110.4 mi (177.7 km)
Existed1924–1955

Louisiana State Route 15 ran 110.4 miles (177.7 km) in a north-south direction from US 65/US 84/SR 6 in Ferriday to SR 11 in Farmersville.

SR 15 became the modern LA 15 in the 1955 renumbering.

Louisiana State Route 15-D

State Route 15-D
LocationConcordia Parish
Existed1938–1955

Louisiana State Route 15-D ran 3.4 miles (5.5 km) in a south-north direction from US 65/SR 16 near Red Gum to US 65/SR 3 in Clayton.

Louisiana State Route 16
Further information: Louisiana Highway 17

State Route 16
LocationWest Carroll Parish–Franklin Parish
Length67.2 mi (108.1 km)
Existed1921–1955

Louisiana State Route 16 ran 67.2 miles (108.1 km) in a north-south direction from the Arkansas state line at Kilbourne to Winnsboro.

The route became LA 17 in the 1955 Louisiana Highway renumbering.

Louisiana State Route 17

State Route 17
Location
Existed1921–1955

Louisiana State Route 18

State Route 18
Location
Existed1921–1955

Louisiana State Route 19
Further information: Louisiana Highway 8

State Route 19
LocationGrant Parish–Catahoula Parish
Length69.1 mi (111.2 km)
Existed1921–1955

Louisiana State Route 19 ran 69.1 miles (111.2 km) in a east-west direction from Colfax to Harrisonburg.

The route became a portion of LA 8 in the 1955 Louisiana Highway renumbering.

Louisiana State Route 20
Further information: Louisiana Highway 1

State Route 20
LocationAlexandria–Shreveport
Length128.8 mi (207.3 km)
Existed1921–1955

Louisiana State Route 20 ran 128.8 miles (207.3 km) in a south-north direction from Alexandria to Shreveport.

The route became a portion of LA 1 in the 1955 Louisiana Highway renumbering.

Louisiana State Route 21

State Route 21
Location
Existed1921–1955

Louisiana State Route 22

State Route 22
Location
Existed1921–1955

Louisiana State Route 22-D

State Route 22-D
Location
Existed1921–1955

Louisiana State Route 23
Further information: Louisiana Highway 106

State Route 23
LocationVille Platte–Gold Dust
Length20.1 mi (32.3 km)
Existed1921–1955

Louisiana State Route 23 ran 20.1 miles (32.3 km) in a north–south direction from US 167/SR 22 west of Ville Platte to a dead end at Gold Dust.

The route was split among four different routes in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 24

State Route 24
Location
Existed1921–1955

Louisiana State Route 24-D

State Route 24-D
Location
Existed1921–1955

Louisiana State Route 24-E

State Route 24-E
Location
Existed1921–1955

Louisiana State Route 25

State Route 25
Location
Existed1921–1955

Louisiana State Route 25-D

State Route 25-D
Location
Existed1921–1955

Louisiana State Route 26

State Route 5
Location
Existed1921–1955

Louisiana State Route 26-D

State Route 26-D
Location
Existed1921–1955

Louisiana State Route 27

State Route 27
Location
Existed1921–1955

Louisiana State Route 28

State Route 28
Location
Existed1921–1955

Louisiana State Route 29

State Route 29
Location
Existed1921–1955

Louisiana State Route 30

State Route 30
Location
Existed1921–1955

Louisiana State Route 30-D

State Route 30-D
Location
Existed1928–1955

Louisiana State Route 30-E

State Route 30-E
LocationPointe Coupee Parish
Length8.0 mi (12.9 km)
Existed1928–1955

Louisiana State Route 30-E ran 8.0 miles (12.9 km) in a north–south direction from SR 30 near Lettsworth to a second junction with SR 30 near Simmesport at the Atchafalaya River. It was a portion of SR 30 bypassed in 1928 by a new alignment.

Louisiana State Route 30-F

State Route 30-F
Location
Existed1928–1955

Louisiana State Route 31

State Route 5
Location
Existed1921–1955

Louisiana State Route 32

State Route 5
Location
Existed1921–1955

Louisiana State Route 33

State Route 33
Location
Length71.3 mi (114.7 km)
Existed1921–1955

Louisiana State Route 33 ran 71.3 miles (114.7 km) in a north-south direction from South Carollton Avenue in New Orleans to the Mississippi state line near Frenier. The route was part of the proposed Lakeshore Highway, but construction on the section from Kenner to Frenier was abandoned in the early 1930s mainly due to the completion of the Bonnet Carrè Spillway that split the route in half. In 1926, US 51 was overlaid on top of SR 33. While the route was marked concurrently, the state route designation was removed in the 1955 renumbering.

Louisiana State Route 34

State Route 34
LocationSlidell-Washington Perish
Existed1921–1955

Louisiana State Route 34 ran in a north-south direction from Slidell to the Mississippi state line at Warnerton.

In 1926, US 190 was overlaid on the portion of SR 34 from Covington to Slidell. While the route was marked concurrently, SR 34 was deleted in favor of US 190 in the 1955 renumbering. The remainder of SR 34 became LA 25.

Louisiana State Route 35

State Route 35
LocationAmite City-Franklinton
Existed1921–1955

Louisiana State Route 35 ran in a west-east direction from Amite City to Franklinton.

The route became a portion of LA 16 in the 1955 renumbering.

Louisiana State Route 36

State Route 36
Location
Existed1921–1955

Louisiana State Route 37

State Route 5
Location
Existed1921–1955

Louisiana State Route 38

State Route 5
Location
Existed1921–1955

Louisiana State Route 39

State Route 39
LocationLeesville–Hagewood
Length41.9 mi (67.4 km)
Existed1921–1955

Louisiana State Route 39 ran 41.9 miles (67.4 km) in a north–south direction from US 171/SR 42 in Leesville to SR 6 at Hagewood.

The route became LA 117 in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 40

State Route 40
Location
Existed1921–1955

Louisiana State Route 41
Further information: Louisiana Highway 10

State Route 41
LocationPointe Coupee Parish
Length8.0 mi (12.9 km)
Existed1921–1955

Louisiana State Route 41 ran 8.0 miles (12.9 km) in an east–west direction from SR 1 east of Melville to SR 30 in Morganza.

The route became part of LA 10 in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 42

State Route 42
Location
Length194.8 mi (313.5 km)
Existed1924–1955

Louisiana State Route 42 ran 194.8 miles (313.5 km) in a north-south direction from Cameron to SR 9/US 84 at Mansfield.

Louisiana State Route 42-D

State Route 42-D
Location
Existed1921–1955

Louisiana State Route 42-E

State Route 42-E
Location
Existed1921–1955

Louisiana State Route 43

State Route 43
LocationBreaux Bridge-Gulf Intracoastal Waterway
Existed1921–1955

Louisiana State Route 43 ran in a general west-east direction from Breaux Bridge to the Gulf Intracoastal Waterway.

When SR 43 was designated in 1921, it ran from Breaux Bridge to Abbeville. In 1926, the route was extended to the Gulf Intracoastal Waterway south of Abbeville. In 1949, US 167 was overlaid on top of SR 43 from Lafayette to Abbeville. While the route was marked concurrently, SR 43 was deleted in favor of US 167 in the 1955 renumbering. The remainder of SR 43 became LA 94 from Breaux Bridge to Lafayette, LA 82 from Abbeville to Esther and LA 333 from Esther to the Intracoastal Waterway.

Louisiana State Route 44
Further information: Louisiana Highway 33

State Route 44
LocationRuston–Farmerville
Length19.6 mi (31.5 km)
Existed1921–1955

Louisiana State Route 44 ran 19.6 miles (31.5 km) in a north–south direction from US 80/SR 4 in Ruston to SR 15 southwest of Farmerville.

The route became the southern half of LA 33 in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 45

State Route 45
Location
Existed1921–1955

Louisiana State Route 46

State Route 46
Location
Existed1921–1955

Louisiana State Route 47

State Route 47
LocationMangham–Bastrop
Length40.9 mi (65.8 km)
Existed1921–1955

Louisiana State Route 47 ran 40.9 miles (65.8 km) in a north–south direction from SR 15 north of Mangham to SR 14 south of Bastrop.

The route was split among five new routes in the 1955 Louisiana Highway renumbering.[2]

Louisiana State Route 48

State Route 48
Location
Existed1921–1955

Louisiana State Route 49

State Route 49
Location
Existed1921–1955

Louisiana State Route 50

State Route 50
Location
Existed1921–1955

References
  1. "Act No. 95, House Bill No. 206". State-Times. Baton Rouge. November 29, 1921. p. 9.
  2. Louisiana Department of Highways (1955). Louisiana Highways: Interim Road Map (Map). Louisiana Department of Highways.
  3. United States Numbered Highways, Selected by American Association of State Highway Officials, Approved by United States Department of Agriculture. American Association of State Highway Officials. 1927. pp. 22–23.
  4. Clason Map Company (1928). Clason's Road Map of Louisiana (Map). Clason Map Company.
  5. Louisiana Highway Commission State-Wide Highway Planning Survey (1937). East Carroll Parish (Map). Louisiana Highway Commission.
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